@WWW{Wikipedia,
  title    = {LaTeX},
  url      = {https://en.wikipedia.org/wiki/LaTeX},
  urldate  = {2020-09-01},
}
@WWW{Moewe,
    title={Möwe in Warnemünde},
    url = {https://bilder-schneider.de/picture.php?/3/category/1},
    urldate = {2020-09-01},
    date = {2019-08-22},
    author ={Marcel Schneider},
}